jsp el 運算式和 jsp:include page include

The following are reserved words in the JSP EL:and eqgttrueinstanceoforneltfalseemptynotifgenulldivmodExpression-Language Implicit ObjectsapplicationScopecookieheaderheaderValuesinitParampageContextpageScopeparamparamValuesrequestScopesessionScopeCustom Tag:BodyTag interface-------JDBBC: Java Database Connectivityusing the java.sql.DriverManagerThe java.sql.DriverManager is a standard part of JDE------------Most of the O/R frameworks support these four approaches, so let's take a look at each one./////////////////////////////////////////////////////////////////////////////////////////////9 implicit objects in JSP:requestresponseoutsessinapplicationconfigpage   :   implicit page object references an instance of the JSP's page impementation.pageContxt  :  a pageContext instane provides the JSP developer with access to all the available JSP scopes and to serveral useful page attributes, such as the currentrequest and response, the ServletContext, HttpSession,ServletConfig to name but a few.exception  Directives:<%@ page import="java.util.Date, java.text.*" pageEncoding="utf-8" %><%@ include file="./foot.jsp" %>In JSP 2.1,there are there types of action elements:1.Standard actions2.Customer actions3.JSTL actionsStandard Actions:e.g.: Actionthe  action will include any output generated by the included resource directlyto the JspWriter assigned to the implicit out variable. This means that you cann specify any different type of web resouce, such as another Jsp or servlet, as long as it produces content of the same type of web resource,such as another JSP page or servlet, as long as it produces content of the same type as the calling JSP page.